if your buying a new epiphany (or Eos) then really the only board that won't void your warranty is the blackheart. it is good enough at what it does.
there are a whole host of other boards out there and most of them do much the same thing at the end of the day. i have run virtues, blackhearts, lucky/spitfire and t-boards. the virtue is a really good board, if expensive. the spitfire board is simple but brilliant. t-board i never really used overly much but seemed good - especially when hooked up to a membrane pad.
end of the day its personal choice.